KRIAlugoro was the last of three diesel-electric attack submarines (SSK) contracted to South Korea’s Daewoo Shipbuilding & Marine Engineering (DSME) for the Indonesian navy under a $1.1 billion contract signed in 2011.

KRI Alugoro submarine, pennant number 405, Nagapasa class, has a length of 61.3 m and a displacement of 1,400 tons, has a peak speed of 11 knots (20 km/h) when submerged and 21.5 knots (39.8 km/h) surfaced. The ship can operate under the sea continuously for more than 50 days and carry more than 40 crew members. The ship is equipped with 8 torpedo tubes and 4 MTU 12V 493 diesel generators.

Under the agreement, the first two would be constructed in South Korea and the third was to be built at the stated-owned PT PAL’s shipyard in Surabaya on the Indonesian island of Java. Components of the Alugoro were fabricated at Okpo shipyard on Geoje Island in South Korea before they were moved to Surabaya for assembly.

The ship was launched in April 2019 and is undergoing a number of sea trials before being put into operation.

According to Wikipedia and csis.org